This week on Flightless Bird David Farrier investigates pizza, one of America\u2019s favourite foods. He discovers that around 76,000 pizza joints bring in $44 billion dollars each year in the US - where every day 13% of the population will eat a slice of pizza. David begins his journey in Los Angeles, as Rob takes him and Monica to a fancy pop-up called \u201cChain\u201d. Here, chefs riff on chain food but with their own upgraded twists - and tonight it\u2019s Pizza Hut! Next David heads to New York to eat a variety of NY pizzas, from the cheap slices of Joe\u2019s, to Pauly Gee\u2019s famous Hellboy pizza. What makes a good pizza? There is no clear answer, but Farrier attempts to find out, before going to one last joint - Ops - an upmarket take on what a pizza should be. Along the way Farrier meets some of those eating the pizza - New Yorkers - who truly love their city.